Starter for internal combustion engines



Nbv. 16, 1937. I HLKLElN 2,099',524

V sTARTE'R FOR INTERNAL VcoxvuausTIoN ENGINEs Filedr April 18, 1935 al 7 i bmw;

Patented Nov. 16, 1937 I UNITED sTATEs PATENT. oFFlcE STARTER Fort INTERNAL coMnUsTIo:

ENGINES I Hermann Klein, Stuttgart-Feuerbach, Germa assignor to Robert Bosch AktiengesellschI Stuttgart, Germany Application April 18, 1935,l Serial No. '17,115 In Germany May 7, 1934 7 Claims. (Cl. 123-179) The present invention relates toinertia mass curedtogether by a ring nut T, that can be Starters for internal combustion engines, in which screwed into a thread s on the starter casing c. the inertia mass set in rotation by a driving mech- Figure 2 shows the casing of the inertia mass anism operates throughv a transmission gearing of a starter having a manual drive situated ec- 6 and a clutch on a driving member which can be centrically to the inertia mass and the clutch 'brought into engagement with a part of 'the ingear. This construction has the great advantage ternal combustion engine. that the casing of the inertia mass can be suit- Inaknown inertia mass starter, the inertia mass abiy rotated relative to the bearing bracket a, and the transmission gearing between the inertia in Ord-er tO Obtain any deSired Position IOf the 10 massi and the driving member itself are each `armanual drive. 10 ranged in a separate casing member, whereby the In general, the Construction has the advantage assembling and also the dismantling of the starter that the starter Can be easily taken' tO pieces in are rendered more difilcult. The object of the in- Order tO Change any damaged parts. ventionisto obtain a compact and cheap construc- In Order to obtain 'a Cheap, Compact, and, What tion of the starter, and one which can be easily iS important fOr vehicles, light Construction, the 15 taken to pieces. This is obtained according to the casing of the inertia mass is preferably drawn invention by the transmission gearV being comfrom Sheet metal. bined with the clutch and the driving member as a I deelare that Whatv I claim is; constructional unit ina bearing bracket, and in- 1. A starter for internal COmbustOn engines serted in a casing enclosing the inertia mass and comDriSing in Combination driving means. an inpreferably also its driving mechanism, and toertia mass driven by saidrdriving means, a easgether with the bearing bracket being secured toing enclosing said inertia mass, said driving means gether. and inertia mass being mounted together and sup- Two examples of Construction of the invention ported by said casing tO fOrm thereWith 9. COnare shown in the accompanying drawing; in structional unit, a transmissionv gear and clutch which:- i i and a driving member for engagement with a Figure 1 shows a starter, with its parts sepa- Dart Of the engine,Y and means mounting Said rated. transmission gear, clutch and driving member to- Figure 2 shows a, second form of Construction, gether as a constructional unit adapted to be The inertia mass starter consists essentially of 'inserted and Withdrawn as a whole into and from three parts constructed as units, namely the bear- Said Casing and af bearing bracket for Said driving ing bracket c, the clutch gear b, and the starter member secured to said casing and adapted to be casing c in which are arranged the inertia mass d connected thereto to detachably connect said and a driving motor e on whose shaft the inertia units togethermass is secured. The clutch gear consists of a, 2. A- starter for internal -combustion engines r J bearing' ring f, in which the outer part 9. of a comprising in combination driving means, an in- 0 plate-clutch is revolubly mounted. The inner part efta mass driven by Said driving. means' a' Casing of the clutch is mounted on a Shaft h10ngitudi enclosing said inertia mass, said driving means nany 'slidable in the clutch, and the end of which and inertia mase bem? mmmted meme? and 40 is famed as a pmon On the part g of the supported by said. casmg toform therewith a 40 cluth are fastenedl pins k on which the in constructional unit, a transmission gear and ternal wheels m of a planet-gear are mounted. clutch and a'drmpg member for engagement W1t.h The. bearing ring f has a fiange n to which is se a part of the engine, a bearing bracket for said iured n internal] toothed wheel, o him th driving member secured to said casing, and means c a' y o n W U e mountlng said transmission gear, clutch and'drxv- 45 #Whels m can ron' The clutch gear With'- the ing member together as a constructional unit pimon Shaft' and the Planet'geafr form a construc' adapted to beinserted and withdrawn as a Whole tional unit which can be inserted into the starter 'into and from said casing and-to be Secured be casing c. The casing has in its interior a stop p, i tween a Stop provided. 0n`the' interiorof Said against which the toothed wheel o bears when the casing and said Ihealing bracket to. detachably starter is assembled. The bearing bracket a, can connect said units togethen be Snugly fitted On the bearing ring f. T he bearing 3.| A star-ter for internal combustion engines bracket has 9' fla-hge q, the external dlameter Of comprising in combination driving means, an in- WhiCh iS equal tO that Of the flange Oh the ring f. ertia mass driven by said driving means, a.casing The bearing bracket and the clutch gear are seenclosing said inertia mass, said driving means 5t and inertia mass being mounted together and supported -by said casing to form therewith a constructional unit, a transmission gear, clutch and driving member adapted for engagement with a part of the engine, a fianged bearing ring adapted to engage in said casing, said transmission gear, clutch and driving member being revolubly mounted in said bearing ring to form a constructional unit adapted to be connected to said casing to detachably connect said units together, and a bearing bracket for said driving member adapted to be secured to the casing and to abut against the fiange of said bearing ring.

4. A' starter for internal| combustion engines comprising in combination driving means, an inertia mass driven by said driving means, a casing enclosing said inertia mass, said driving means and inertia mass being mounted together and supported by said casing to form therewith a constructional unit, a transmission gear, ciutch and driving member adapted for engagement with a part of the engine, a flanged bearing ring adapted to engage in said casing, said transmission gear, ciutch and driving member being revolubly mounted in saidbearing ring to form a constructionai unit and a bearing bracket for said driving member adapted -to enter said casing and to abut against the fiange of said bearing ring and a ring nut encirciing said bearing bracket adapted to be screwed into the casing for securing the bearing bracket and bearing ring together with said transmission gear, ciutch and driving member to the casing whereby said units are detachably connected together.

5. A starter for internal combustion engines comprising in combination driving means, an inertia mass driven by said driving means, a casing formed ofV drawn steel enclosing said inertia mass, said driving means and inertia mass being mounted together 'and supported by said casing to form therewith a constructional unit, a transmission gear, ciutch and driving `member adapted for engagement with a part of the engine, a fianged bearing ring adapted to enzflge in said casing,

aoeasaa said transmission gear, clutch and driving member being revolubly mounted in said bearing ring to form a constructional unit and a bearing bracket for said driving member adapted to be secured to/the casing and to abut against the fiange of said bearing ring. to detachably connect said units together.

6. A starter for internal combustion engines comprising in combination, driving means, an inertia mass driven by said driving means, and a casing enclosing said inertia mass and driving means, said driving means and inertia mass being mounted together and supported by said casing to form therewith-a constructional unit, a transmission gear and cluteh and a driving member for engagement with a part of the engine, said transmission gear, clutch and driving member being mounted together to 'form a second constructional unit, a bearing bracket detachably mounting said second constructionai unit, and means for detachably Securing said bracket in said casing whereby said units are detachably and operatively connected together, said bracket and casing forming between them a housing for enclosing and supporting said second constructional unit.

7. A starter for internal combustion engines comprising in combination driving means, an inertia mass driven by said driving means, a casing enclosing said inertia mass, said inertia mass and driving means being supported by said casing to form therewith a constructional unit, a transmission gear and clutch and a driven member for engagementv with a part of' the engine, a ring member supporting and holding said transmission gear, clutch and driven member together to form a constructionai unit adapted to be `inserted and withdrawn as a whole into and from said casing, a ciamping member adapted to detachably hold said second unit in said casing, and a bearing bracket for said driven member secured in said casing by said ciamping member.

HERMANNKIEIN. 

